Characteristics:The fan is made of metal support, built-in centrifugal fan and ABS plasticcover. It is widely applied to electrical products and cabinets.Centrifugal top ventilator can exhaust heat load with high efficiency.It can work under electromagnetic environment, meanwhile, it won'tinterfere the system or equipment where it installed.Running temperature/humidity: (unconcretionary)Temperature: -30ºC ~ +80ºC Humidity: 0% ~ 95%RAL 7035 grey is the standard color, can be changed to RAL 7032.Protection class: E N 60 5 29 I P 33 / IP54(not suitable for outdoor equipment).